Ingot-stripping apparatus.



0. L. TAYLOR. INGOT STRIPPING APPARATUS.-

APPLIUATION'FILED MAR- 25, 1905.

Tu: nonnrs Phi}: ca, WASHINGTON, o. c.

PATENTED OCT. 9, 1906.

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0. L. TAYLOR. INGOT STRIPPING APPARATUS.

APPLICATION P111111) IAB.25,1905.

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PATENTED OCT. 9', 1906.

a SHEETS-BHEET 2" PATENTED OUT. 9, 1906.

' c. L. TAYLOR.

INGOT STRIEPING APPARATUS.

APPLICATION FILED MAR. 25, 1905.

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fiuo 5% a T "ORR PETERS WASH'NQT N D C UNITED STATES PATENT OFFICE.

CLARENCE L. TAYLOR, OF ALLIANCE, OHIO, ASSIGNOR TO THE MORGANENGINEERING COMPANY, OF ALLIANCE, OHIO.

lNGOT-STRIPPING APPARATUS.

Specification of Letters Patent.

Patented Oct. 9, 1906.

1'0 0,66 whom it may concern:

Be it known that I, CLARENCE L. TAYLOR, of Alliance, in the county ofStark and State of Ohio, have invented certain new and use fulImprovements in Ingot-Stripping Apparatus; and I do hereby declare thefollowing to be a full, clear, and exact description of the invention,such as will enable others skilled in the art to which it appertains tomake and use the same.

My invention relates to an improvement in ingot-stripping apparatus; andit consists in the parts and combmations of parts, as Wlll be more fullydescribed, and pointed out in the claims.

In the accompanying drawings, Figure 1 is a view in longitudinal sectionof my improvement, showing the thrust-bar or plunger elevated and thetongs open. Fig. 2 is a sectional view showing the thrust bar or plungerdepressed and the tongs closed. Fig. 3 is a view in longitudinalsection, taken at right angles to Fig. 1; and Fig. 4 is a view 1ntransverse section on the line A A of Fig. 1.

i 1 represents a casing made of two sections, each provided on its sideedges wlth a series of perforated ears 2 for the passage of bolts orrivets, by which the two sections are secured together. This casing isoblong or oval in cross-section, as shown in Fig. 4, and is secured toand depends from a trolley mounted on a traveling bridge, such as arenow in common use with ingot-stripping mechanism and overhead travelingcranes. This casing 1 forms a housing and guideway for the strippingmechanism, whlch latter is suspended from a drum on the trolley byflexible cables or chains 3. These cables or chains are connected bysuitable eyebolts 4 with the cross-head 5 of the carrying-frame 6. Thisframe 6 carries and supports the stripping mechanism, which comprisestwo tongs 7, a thrust-bar or plunger 8, two threaded nuts or sleeves 9and 10, and a right and left hand screw 11.

The thrust-bar or plunger 8 is mounted in and projects through the lowerend of the frame 6 and is provided at its lowerend with a removable head12, designed to engage the upper end of the ingot, and at its upper endwith diametrically-disposed shoulders 13, which latter rest and move inthe correspondingly-disposed slots or guideways 1 1, formed in thecarrying-frame 6 above the cross-head 5. This cross-head 5 engaging theshoulders 13 of the thrust bar or plunger limits the downward movementof the latter, while its upward movement is limited by the engagement ofthe upper end of the sleeve or nut 9 with the adjacent end of the sleeveor nut 10.

The sleeve or nut 9 is located within and is secured in any suitablemanner to the cylindrical thrust-bar or plunger 8 and is providedinternally with a thread which engages the thread on the lower end ofthe screw 11. The upper sleeve or nut 10 is secured at its upper end tothe upper cross-head 15 and is provided internally with a thread engagedbya thread on the screw 1 1. As before stated, this screw has right andleft hand threads, the right-hand threads engaging the threads of onenut or sleeve and the left-hand threads engaging the threads of theother nut or sleeve, so that when the screw is rotated in one directionthe tendency is to cause a movement of the nuts away from each other andwhen rotated in the opposite direction to cause a movement of the nutsor sleeve toward each other. As, however, there can be no longitudinalmovement of the nut 10, except when the whole stripping apparatus iselevated and lowered by the cables 3, it follows that when the screw isrotated in the sleeve or nut 10 the screw moves longitudinally in thenut, while the lower nut moves longitudinally on the screw, thusimparting to the nut 9 the longitudinal movement due to the rotationof'the screw in said nut and the longitudinal movement of the screw dueto its engagement with the threads of a fixed nut. The upper end of theframe 6 is also secured to the cross-head15 and is provided at pointsintermediate the guides or slots 14 with projections 16, which rest andmove in guideways 17, formed on the inner face of casing 1, thuspreventing the frame from turning within the casing.

The supporting cables or chains 3 pass up through the cross-head 15 andare secured to a hoisting-drum on the trolley.

The shaft 18 of screws 11 may pass up through and have a slidingengagement with a pinion on the trolley or it may be encircled at apoint below the trolley but above the limit of upward movement of thecross-head 15 by a pinion in engagement with a second pinion on a fixedshaft depending from the trolley. The particular means for transmit- 55ency of the springs 24 is to raise the bars the plunger in a positionover and in close proximity to the ingot. By now rotating the screw thethrust-bar or plunger is forced downwardly until the head engages theingot. This engagement of the ingot by the head of the thrust-bar tendsto move the frame 6 up wardly until the engagement of the tongs with theears of the mold stops such upward movement, after which the continuedrotapositions, as shown in Fig. 2.

tion of the screw exerts a pulling force on the tongs and a pushingforce on the ingot, and these combined forces operate to strip the moldfrom the ingot. After the mold has been loosened from its ingot themotion of the screw is stopped and the stripping mechanism elevated bythe hoist-drum and cables 3 until the mold is clear of the ingot, afterwhich it is carried by the trolley and deposited on a truck convenientlyplaced to receive the empty molds.

The tongs 7 normally rest in their closed These tongs are in the form ofbell-crank levers, the longer vertical members having loops 19 to engagethe ears or lugs on the molds, while the shorter and horizontal members20 are pivotally connected at their outer ends to the lower ends of bars21, the upper ends of which are pivotally connected to the blocks 22.These blocks 22 are loosely mounted on the rods 23, which latter areseated at their ends in holes in the cross-heads 5 and 15. These blocks22 rest on springs 24, which encircle the rods 23 and rest at theirlower ends on the seats 25, secured to the rods. The blocks 22 arelimited in their upward movement by nuts 26, adjustably mounted onthreaded ortions of the rods, and each rod 23 is provi ed near its upperend below cross-head 15 with a stop 27, resting normally in the path ofthe shoulders 13 on the sleeve or thrust-bar 8.

With the tongs pivotally mounted on the bearings 28, the weight of thetongs and the bars 21 is sufficient to hold them in their closedposition, as shown in Fig. 2. The tendand open the tongs. Hence thesprings act as cushions for the tongs in closing and operate to preventany accidental swinging or swaying movement of the latter.

After the mold has been stripped from the ingot and carried to the truckthe screw 11 should be rotated in a direction to elevate the thrust-bar.This upward movement of the thrust-bar carries the shoulders 13 intocontact with the stops 27 as shown in Fig. 1, thus elevating the rods 23and bars 21. This upward movement of the bars, which operates to open orspread the tongs, is cushioned or controlled by the springs 24. Hence ifany obstruction should interfere with the free opening movement of thetongs the springs will absorb all the-upward movement of the rods, andthus prevent any injury to the tongs or their connections.

Each member of the tongs is provided on its inner face above its eye orloop 19 with an inwardly-projecting shoulder 29.

It sometimes happens when the ingot has not cooled sufliciently that thehead 12 will penetrate the ingot and become so tightly embedded thereinthat the weight of the ingot and mold is not suflicient to dislodge it.When this happens, the shoulders 29 on the tongs overlap the upper endof the mold and stop the upward movement of the mold and hold same whilethe boot or head is withdrawn by the upward movement of the thrust-baror plunger.

It is evident that many slight changes might be resorted to in therelative arrange ment of parts shown and described without departingfrom the spirit and scope of my invention. Hence I would have itunderstood that I do not wish to confine myself to the exactconstruction of parts shown and described; but,

Having fully described my invention, what I claim as new, and desire tosecure by Letters Patent, is

1. In an ingot-stripper the combination with a carrying-frame,ingot-tongs pivoted thereto and a plunger carried by and mountedtherein, of means located above the pivots of the tongs and actuated bythe upward movement of the plunger for opening the tongs.

2. In' an ingot-stripper, the combination with a thrust-bar or plungerand means for moving same vertically, of pivoted tongs having means forengaging lugs on the mold, and provided with inwardlyprojectingshoulders overhanging the mold.

3. In an ingot-stripper the combination with a carrying-frame, of athrust-bar or plunger movably mounted in said frame and tongs pivoted tothe frame, the said tongs having inwardly-projecting shoulders adaptedto overlap the upper end of the mold.

4. Ingot-stripping tongs having loops or eyes to engage lugs on themold, and inwardlyprojecting shoulders adapted to overhang the upper endof the mold.

5. In an ingot-stripping apparatus, the combination with acarrying-frame, tongs pivoted thereto, and flexible means for suspendingsaid frame, of a longitudinallymovable thrust-bar or plunger. carried byand mounted in said frame, tongs pivoted to said frame and means locatedabove the pivots of the tongs and actuated by the upward movement of theplunger for opening the tongs.

6. In an ingot-stripping apparatus, the combination with acarrying-frame, and a plunger or thrust-bar mounted in and guidedthereby, the upper end of said thrust-bar having means for engaging thetongs-opening means, of tongs pivoted to the carryingframe, and meansconnected to the latter and having parts located within the path oftravel of the plunger so as to be engaged by the upper end of thelatter.

7. In an ingot-stripping apparatus, the

combination with two cross-heads located inthe same vertical plane, andtwo rods loosely mounted in said cross-heads, of a verticallymovableplunger or thrust-bar, pivoted tongs, bars engaging said tongs andconnected to blocks slidingly mounted on the rods, and stops on saidrods adapted to be engaged by the thrust-bar or plunger during theupward movement of the latter.

8. The combination with a carryingframe, two cross-heads connectedthereto, rods slidingly mounted in said cross-heads, springs on saidrods, blocks resting on the springs, and stops carried by the rods, oftongs pivoted to the carrying-frame, bars connecting said tongs andsliding blocks, and a thrust-b ar or plunger adapted in its upwardmovement to engage said stops.

9. The combination with a carrying-frame, two cross-heads carriedthereby, and oppositely-disposed guides in said frame intermediate thecross-heads, of a threaded sleeve or nut connected to the uppercross-head, flexible devices connected to the lower cross-head, aplunger or thrust-bar slidingly mounted in the carrying-frame andprovided with projections moving in the guides in the carrying frame, athreaded nut or sleeve secured within said plunger or thrust-bar, and adouble screw engaging both nuts for actuating the thrust-bar or plunger.

10. The combination with a carryingframe and flexible means forsuspending same, of a sleeve or nut fixed to said frame, a sleeve or nutmovable in said frame, tongs carried by the frame, a plunger mounted inthe frame and secured to the movable nut or sleeve, and means locatedabove the pivots of the tongs, and connected with the tongs and engagedby the plunger in its upward movement, for spreading the tongs.

11. Ingot-stripping tongs having means for engaging a mold whereby thelatter is lifted, and inwardly-projecting shoulders adapted to overhangthe upper end of the mold.

In testimony whereof I have signed this specification in the presence oftwo subscribing witnesses.

CLARENCE L. TAYLOR.

Witnesses:

E. E. BROSIUS, A. L. ROBERTS.

